Double-edge Nut Files

  • 70 Reviews
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The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

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Double-edge Nut Files 0.012" / 0.020"

0.012" / 0.020"

Item # 4541
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$27.34

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Double-edge Nut Files 0.026" / 0.032"

0.026" / 0.032"

Item # 4542
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$27.34

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Double-edge Nut Files 0.036" / 0.042"

0.036" / 0.042"

Item # 4543
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$27.34

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Double-edge Nut Files 0.050" / 0.060"

0.050" / 0.060"

Item # 4544
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$27.34

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Double-edge Nut Files 0.075" / 0.090"

0.075" / 0.090"

Item # 4545
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$27.34

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Double-edge Nut Files 0.105" / 0.120"

0.105" / 0.120"

Item # 4546
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$27.34

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Details

The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

Each 9/16" x 7-5/8" (14.29mm x 193.67mm) steel file cuts on the edges only, and tapers from the center to a different thickness on each cutting edge. The set of six files does the work of twelve!

Rubber-coated handles give firm, comfortable control for the job. The complete set includes edge widths for filing round-bottom nut slots on most stringed instruments, including basses. Each file's cutting edge is approximately 3-7/8" (98.43mm) long.

What files do I need?
Choose nut slotting files that are the same size or no more that a few thousands larger than your individual string gauges. A smaller file can also be rocked side-to-side to widen a slot to the desired size. For example, you can cut a .043" slot with a .042" file by moving it around a bit.

The most popular Double-edge Nut Files are included in the Essential Nut Making Tool Kit, which has all the basic tools you'll need for shaping, string-spacing, slotting and fitting string nuts like a pro.

Tip: Customize your files
We recommend that you mark on each side of your files so while working you can quickly tell the different gauge of cut.

Here's how: make a cut on a scrap piece of bone or wood with both sides of the nut file, then measure the width of each cut with feeler gauges to determine which side is which. Guitar strings of known gauges will also work as measuring tools in a pinch.

Once you have determined the proper edge, mark the file accordingly with a permanent marker.


Product Instructions

Making a Nut, Step-by-Step

Dan Erlewine, of Stewart-MacDonald's R&D Team, walks you through making and installing a new nut.

Ratings & Reviews

Double-edge Nut Files

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  • GOOD PRODUCT
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  • Based on 70 Reviews
Displaying 1 of 7 1 2 3 4 5 6 7
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Must have!

By BrunoLob+úo from Brazil - Rio de Janeiro
(Customer's Reviews) Thursday, December 18, 2014


I have 4 of them and love em' all! Just buy it!

Good quality

By \N from \N
(Customer's Reviews) Wednesday, June 25, 2014


I work on both basses and guitars and find the use for all of the files in the set from the smallest to the biggest gauge. They cut well and leave well shaped slots - no string binding, no side-to-side wandering. Couldn't be happier!

Great files and great customer service

By Jeff R. from Atlanta, GA
(Customer's Reviews) Sunday, June 15, 2014


I've had a set of the double-edged nut files for 13 years and one chipped so I figured it was time to order a whole new set. I'd definitely gotten my money's worth from the first set. The new ones cut beautifully BUT the .012/.020 file had a defect in the .020 side. It left a ridge in the nut slot causing the string to click when it was bent. I phoned Stew Mac and they sent a new one right away, no hassle. BUT, the new one had the same defect. Stew Mac sent me the single nut files that matched the gauges, again, no hassles. Thanks for the real customer service.

Good but...

By Alan Farrow from New Zealand
(Customer's Reviews) Friday, May 16, 2014


I am now on my second set of these files but have found that both sets had at least one handle fitted upside-down so I was cutting incorrect widths. Pays to check.

Great files and sharp

By mfontz from Boston, MA
(Customer's Reviews) Friday, April 18, 2014


These are a great set of files, if there's any drawback is the angle on the files goes wide very fast. This leaves you with a nut with wider slots at the top. Filing down the top of the nut solves the problem but for sure the strings will not get stuck.

mostly great

By rhurst from Havasu, AZ
(Customer's Reviews) Sunday, January 26, 2014


The files were pretty good. The .105/.120 file was not as straight and true as all the others. On all the slots, I ended up having to use a size up to .015 smaller than the target gauge for the final pass to eliminate the buzzing at the nut. Didn't cause the string to bind or anything doing that. Good thing I left a little extra height just in case & had a spare nut to try again. Wasted one in the process.

Great nut files

By RestoGuitar from Cincinnati, Ohio USA
(Customer's Reviews) Thursday, December 19, 2013


I bought these to replace a 30 year old set and to have bass guitar nut widths. They cut so quick I ruined the first nut! Excellent product but I would like some indication of which cutting side corresponds to which size.

Whats all the buzz about?

By Mike Tonn from Orient Ohio
(Customer's Reviews) Thursday, November 14, 2013


These files work perfectly for a great fit right from the start. Those days of using random needle files are long gone and so is the buzz.

I'll Wait ....

By R. Howard from Alaska
(Customer's Reviews) Tuesday, September 10, 2013


I have used every set of nut files available and still grab them all up to do a job efficiently w/o compromise. These work well, but I won't spend pending additional sizes I use often.

 Double-edge Nut Files

By Martin from Rosario, Santa Fe, Argentina
(Customer's Reviews) Tuesday, September 10, 2013


I bought the complete set of files. Im happy with their use and quality of construction. The only thing that I think improved, are the flat edges. Flat edges make flat slotts. I consider the gauged nut slotting files a better option.

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